The textwidth (tw) variable switches from 68 to 60, when moving from ACTION to DIALOG. This ensures good margins.

Control-p will re-format a paragraph from under the cursor downwards, relative to the (textwidth) margin.

When you tab three times to type in a character name for DIALOG, and you type the first letter of the characters name and then tab again, then you will be presented with a choice to autocomplete that characters name. (provided you've typed that characters name above a DIALOG at least once before).